Sewing-machine motor attachment.



N0. 657,l65. Patented Sept. 4, I900. F. P. HUYCK;

SEWING MACHINE MOTOR ATTACHMENT.

(Application filed June 7, 1900,)

3 Sheets-Sheet I.

(No Model.)

N0. 657,|65. Patented Sept. 4,1900. F. P. HUYCK.

SEWING MACHINE MOTOR ATTACHMENT.

' (Application filed June 7, 1900. (No Model.) 3 Sheets-Sheet 2.

WITNESSES: INVENTOR.

No. 657,|6 5. Patented'Sept. 4, I900.

' F.IP. HUYCK.

SEWING MACHINE MOTOR ATTACHMENT.

(Application filed June 7, 1900.) (No llo'del.)

3 Sheets-Sheet 3.

WITNESSES: v I I %VENWTZR. 1% 249% Z% 7 I THE wunms Perms cu. lmoromnuvwAsumGfdm-m c.

NiTED ATES;

FRANCIS P. HUY-oK, or swANToN, OHIO;

SEWING-MACHINE MOTOR ATTACHMENT.

SPECIFICATION forming part or arem Patent Ne. 657,165, dated September4, 1900.

Application filed J1111e 7, 196 0. Serial No. 19,378. (No model.)

have invented certain new and useful 1m provements in Sewing-MachineMotor Attachments; and I do declare the following to be 'a full, clear,and exact description of the invention, such as will enable othersskilled in the" art to which it appertains to make and use the same,reference being had to the accompanying drawings, and to the letters andfig ures of reference marked thereon, which form a part of thisspecification.

In nearly all sewing-machines of standard makes a driving band or beltruns over a balance-wheel pulley fixed upon the projecting stub of ahorizontal shaft in the arm of the machine.

My invention relates to and one object is to provide a sewing-machinemotor which may be removably applied directly to the shaft of any of thesewing-machines of the class referred to without other alteration in thesowing-machine than to merely remove the balance baud-wheel from itsshaft and to tap one' or more small screw-threaded holes in the up rightarm of the sewing-machine.

The further object of myinvention is to pro Vide my motor with a simpleand efficient brake and rheostat arrangement designed to be governed bya single movement of one foot of the operator.

My invention is also designed to furnish a bobbin-winding device whichmay be run by my motor independently of the sewing-ma chine.

I attain these objects by means of the devices and arrangement of partshereinafter described, and shown and illustrated in the accompanyingdrawings, in which- Figure 1 is a central vertical longitudinalsectional elevation of my device; Fig. 2, an end view of the same insection on line w as, Fig. 1, seen from the right in said figure; andFig. 3, an endview of my device seen from the right in Fig. 1.

Like letters and numerals of reference indicate like parts throughoutthe several drawings.

In the drawings, A is the sewing-machine table, B the arm, of thesewing-machine, and O the horizontal driving-'shaftin' said arm, havinga projecting stub portion D."

I 1 is a bracket with one or more holes coinciding with correspondingholes tapped in the arm B; Into these holes are secured the bolts 2, bymeans of which the bracket is rigidly secured in' upright position 'uponthe arm. The holes in the bracket are somewhat enlarged to permit thevertical and lateral adjustment of the bracket. Upon the bracketis'secured, by means of bolts 3, the laminated pole-pieces 4: of thefield-magnets 5.

6 is a sleeve which fits upon and is rigidly secured to the stub-shaft Dby means of setscrews or equivalent devices 6. This sleeve serves as anextension of the shaft D, and its bore may be of any required sizewithout varying the proportions of the other parts. Upon the sleeve 6 isa loose sleeve 7, having at its inner end and formed integral therewitha' wheel 8, having two steps. One of these steps serves for thebrake-strap 9 and the other for the bobbin-winder 10. Mounted upon andrigidly secured to this sleeve by means of bolts 11, passing throughwood blocks 12 into the sides of the wheel 8, is the armature 13. Thefield-magnet and armature may be of any preferred type and are providedwith commutators 14 and brushes 15 of any preferred construction. Uponthe sleeve 6 is a conically-swelled portion 6. The sleeve 7 on itsinterior is provided with a coinciding conical portion 7 16 is ahand-wheel having a central threaded boss 16 screwed into the threadedinterior of the outer end of the sleeve 6, as at 6.

17 is'a hand-wheel rigidly secured to the sleeve 7. When the hand-wheel17 is held fast and the hand-wheel 16 is screwed into the sleeve 6, ashoulder 15 on the'hand-wheel comes in contact with the projecting end.of

the sleeve 7, which is forced inwardly,so that 1 the two conicalportions 6 and 7 become closely engaged. The two sleeves are now bymeans of the clutch arrangement here described closely engaged with eachother, and when the armature is revolved the two sleeves and the shaft 0D will rotate together.

The bobbin-winder 10 is journaled, as at 10 upon the extremity of arm10*, which at ICO its margin is pivotally mounted upon the bracket 1, asat 10.

The brake-strap O is secured at one end, as at 9, to the bracket 1 andpasses thence around its proper step in the wheel 8 and is secured, asat 9", to a lever 18, fulcrumed to the bracket, as at 18. Iivotallysecured to the outer end of the lever 18 is a down-rod 19, which looselyengages and travels in an eye, as at 19, in the top of a pedal-rod 20,connected with one of the pedals of the machine, (not shown in thedrawings,) which is operated and controlled by the foot of the operator.

21 is a rheostat secured beneath the table of the sewing-machine andthrough bindingposts 21 and 21 is connected in the circuit which drivesthe motor. The movable rheostat-arm 22 is connected with and controlledby the rod 20. This is accomplished as follows: In the top of the rod 20is a vertical slot 20, through which projects a screw or pin 23, whichis rigid with the arm 22. The rod 20 and the arm 22 are held normallydepressed by spring 2%, connected with the arm 22, as shown. The rod 19and the rod 20 are held normally in the relation to each otherillustrated in Fig. 1 by means of spring 25.

The operation of my device is as follows: Assume that the bracket 1 isby means of the bolts 2 properly secured to the sewingmachine arm B,that the sleeve 6 is rigidly attached to the stub-shaft D, that therheostat and motor are duly connected in circuit, and that the sleeve 7,by means of the hand-wheel 16, is forced inwardly upon conical shoulder6 so that the two sleeves and their attachments revolve together. Now,if the pedalrod 20 by means of the pedal is elevated the brake-strap 9will be released from the brakewheel 8 and the arm 22 of the rheostatwill be moved in the arc of a circle through a gradually decreasingelectrical resistance and the armature of the motor will revolve with aspeed in proportion to the electrical energy transmitted through therheostat. The motion of the armature revolves the shaft 0, and therebyimparts motion to the sewing-machine in the usual manner. WVhen the footof the operator is removed from the pedal, the spring 24: throws themachine out of circuit, and if it is desired to stop the machinesuddenly the continued movement of the pedal will overcome theresistance of the spring 25, and the rod 20, through the connection 19,will now pull down upon the rod 19, which in turn will pull upon thelever 18, thus setting the brake-strap 9 against its step upon theperiphery of the wheel 8. This will instantly stop the machine. \Vhenthe bobbin is to be wound, the hand-wheel 16 is slightly unscrewed, andthe arm 10 is swung so that the periphery of the bobbin-winder 10 willfall into frictional contact with the outer periphery of the wheel 8.The armature 13 and its attached parts will now revolve loosely upon thesleeve 6; but the bobbin-wheel will be revolved, while the shaft C Dwill cease to revolve.

Having described my invention and its operation, what I claim, anddesire to secure by Letters Patent, is-

1. In a machine of the described class, a bracket, means for detachablysecuring the same to a sewing-machine arm, an electric motor mountedupon said bracket, and means for detachably securing the armature ofsaid motor upon the shaft of such sewing-machine.

2. In a machine of the described class, a bracket, means for detachablysecuring the same to a sewing-machine arm, a motor mounted upon saidbracket, an extensionsleeve adapted to be detachably secured to theshaft of such sewing-machine and means for detachably engaging thedriving mechanism of the motor with said sleeve.

3. In a machine of the described class, a bracket, and means fordetachably securing the same to the arm of the sewing-machine, a motormounted on said bracket, a sleeve, means for rigidly securing the sleeveto the shaft of the sewing-machine, another sleeve on said latter sleeveengaged with the driving mechanism of said motor, and means for engagingand disengaging said two sleeves, whereby they may be caused to revolvein unison, or whereby the outer sleeve may re volve loosely upon theinner sleeve.

4. In a machine of the described class, a motor adapted and arranged tobe detachably engaged directly with the shaft of the sewingmachine, aclutch mechanism for engaging and disengaging the motor with the shaft,a bobbin-winder and means for throwing the bobbin winder into and out ofoperative connection with the motor, whereby the sewingmachine and thebobbin-winder may be operated independently of each other.

5. In a machine of the described class, a motor, means for connectingthe same di* rectly to the shaft of a sewing-machine, a rheostat, abrake mechanism for said motor, a pedal-rod connecting the brakemechanism and the rheostat, whereby, by the movement of said rod, thebrake and rheostat are controlled in harmony.

O. In a machine of the described class, a motor, means for detachablysecuring the same directly to the shaft of a sewing-machine, a clutchmechanism for throwing the motor into and out of operative engagementwith the said shaft, a two step wheel upon said motor, a brake mechanismconnected with one of said steps, a bobbin-winder, and means forthrowing said winder into and out of engagement with the other step ofsaid wheel.

7. In a machine of the described class, a bracket, a motor thereon, asleeve adapted to be'engaged with the shaft of a sewing-matoo chine,another sleeve upon said first-men- In testimony whereof I affix mysignature in presence of two witnesses.

FRANCIS P. iIUYoK.

Witnesses:

ELMER MINNIoH, EDGAR EDsoN HAYNES

